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1. |
A hoop and a solid cylinder of same mass and radius are made of a permanent magnetic material with their magnetic moment parallel to their respective axes. But the magnetic moment of hoop is twice of solid cylinder. They are placed in a uniform magnetic field in such a manner that their magnetic moments make a small angle with the field. If the oscillation periods of hoop and cylinder are Th and Tc respectively, then |
A. | Th = 0.5 Tc |
B. | Th = Tc |
C. | Th = 2Tc |
D. | Th = 1.5 Tc |
Answer» C. Th = 2Tc | |